I've no horse in this race, but the comment..

"I have written production level code in Erlang, namely a BitTorrent client good enough for everyday use"

...seems to be going some way towards proving the Acharya's point #4 for the following reasons:

1) No reference to any actual users of the code apart from the author himself.

2) No link to where the code is available.

3) Code is a single-user client, when Erlang's strength is usually considered to be in multi-user servers.

It's not obvious that the author understands what is meant by "production level", since the project mentioned does not even appear to meet the most liberal possible interpretation of this term, which would be "shipped".